Advertisements
Advertisements
Question
Name and state the following with reference to the elements of the first three periods of the periodic table.
Metalloid in Period 3.
Advertisements
Solution
Silicon
APPEARS IN
RELATED QUESTIONS
Fill in the blank:
The formulae of chloride of metal M is MCl2. The metal M belongs to ……………. group.
Write the atomic numbers of two elements 'X' and 'Y' having electronic configuration 2, 8, 2 and 2, 8, 6 respectively.
Fill in the blank in the following statement:
The tendency to gain an electron ............... on moving down in a group of the periodic table.
How do atomic structures (electron arrangements) change in a period with increase in atomic numbers from left to right?
The atomic numbers of three elements A, B and C are given below:
| Element | Atomic number |
| A | 5 |
| B | 7 |
| C | 10 |
(i) Which element belongs to group 18?
(ii) Which element belongs to group 15?
(iii) Which element belongs to group 13?
(iv) To which period/periods do these elements belong?
Atomic number of metal ‚A‛ is 11, while atomic number of metal ‚B‛ is 20. Which of them will be more reactive? Write the chemical reaction of dilute HCl with metal ‚A‛.
The position of elements A, B, C, D and E in the periodic table are shown below:
|
Group 1 |
Group 2 |
Group 17 |
Group 18 |
|
|
|
|
D |
|
|
B |
C |
|
|
A |
|
|
E |
State which is metals, non-metals, and noble gas in this table.
State the nature of compounds formed when group 17 elements combine with (i) metals (ii) non-metals.
Moving down in the second group, number of valence electrons ______.
Name the elements in Period 1.
